As the wind power industry grows, those 100-foot pinwheels are becoming more and more an accustomed part of the landscape. They could soon, however, be a thing of the past. Vortex Bladeless, a Spanish company, is proposing a radical new way to generate energy from the wind. The bladeless turbines, elongated upside-down cones that they say look like “asparagus,” not only look completely different from conventional turbines but harness wind energy in an innovative way.
The basic idea of the Vortex is similar to that of conventional wind turbines–use the kinetic energy of air currents to generate electricity. This new invention, however, achieves this through an altogether different mechanism. Instead of the rotation of propellers, the Vortex uses “vorticity,” the aerodynamic effect that creates a pattern of spinning vortices when wind breaks against a solid structure. When wind is strong enough, vorticity causes an oscillating motion in the structures it encounters. Engineers and architects have been battling this for ages, working to design buildings and other structures that resist these wind whirlpools, which caused the collapse of the Tacoma Narrows Bridge in 1940.
Studies show that the Vortex captures thirty percent less wind power than the conventional design. However, twice as many Vortexes as propeller turbines can fit into the same space, which means a net 40% greater ratio of energy production to land area. Incidentally, using land more efficiently is perhaps the most important way protect the environment. The Vortex has no bolts, gears, or mechanical moving parts, making it 80 percent cheaper to maintain than conventional turbines. It’s also about 40 percent cheaper to install, with manufacturing costs at about 53 percent less. The Vortex is silent and, without spinning blades to fly into, safer for birds.
The technology is still in development. The company has started a crowdfunding campaign with the goal of 5,000 backers and $50,000 and has raised a million dollars of government funding and private capital in Spain. They are now looking to the United States for more funding. The Vortex Mini, which stands 41 feet tall and can capture forty percent of the power of the wind when conditions are perfect (blowing at about 26 mph), is scheduled for launch for residential use in developing countries in 2016. The 490 ft commercial Vortex Grand, with a generating capacity of 1 mW (enough to power 400 homes) is scheduled to hit the market in 2018.
At Earth Sharing, we know it is important encourage similar efforts to generate clean power. Systemically, this could be achieved through high taxes on oil, coal, land, other natural resources and the pollution produced in consuming them. Simply making harmful activities more costly through taxes while eliminating taxes on what is needed to produce clean energy (labor, research, sales of hardware, etc.) would foster an entrepreneurial environment more conducive to innovation and, in so doing, align corporate financial interests with protecting the environment.